Buffy Summers, best known as the vampire slayer, is now experimenting with women.

In a new issue of the Buffy the Vampire Slayer comic book series being released Wednesday, Buffy sleeps with a fellow vampire slayer, who just happens to be a woman.

That's really rare in mainstream comics, especially for a lead character.

Joss Whedon, the creator of the film, television show, and executive producer of the comic book said the story line evolved naturally.

Issue No. 12 was written by Drew Goddard, who's the screenwriter of Cloverfield. In this series, Buffy and her female friend are in bed and naked under the sheets.

“It puts the reader in this ‘Oh my God’ moment,” Whedon said during a telephone interview with The NY Times. “And it puts Buffy in an ‘Oh my God, what did I just do?’ moment.”

Whedon made sure to mention that “We’re not going to make her gay, nor are we going to take the next 50 issues explaining that she’s not. She’s young and experimenting, and did I mention open-minded? You do have to be careful about the message you’re sending out. It’s a double-edged sword. You have to be responsible, but you also have to be irresponsible or you’re not telling the best stories.”